OPA2211A

正在供货

1.1nV/rtHz 噪声、低功耗、精密运算放大器

产品详情

Number of channels 2 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 36 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 4.5 Vos (offset voltage at 25°C) (max) (mV) 0.15 Offset drift (typ) (µV/°C) 0.35 Input bias current (max) (pA) 175000 GBW (typ) (MHz) 45 Features Shutdown, Small Size Slew rate (typ) (V/µs) 27 Rail-to-rail Out Iq per channel (typ) (mA) 3.6 Vn at 1 kHz (typ) (nV√Hz) 1.1 CMRR (typ) (dB) 120 Rating Catalog Operating temperature range (°C) -40 to 125 Iout (typ) (A) 0.03 Architecture Bipolar Input common mode headroom (to negative supply) (typ) (V) 1.8 Input common mode headroom (to positive supply) (typ) (V) -1.4 Output swing headroom (to negative supply) (typ) (V) 0.2 Output swing headroom (to positive supply) (typ) (V) -0.2 THD + N at 1 kHz (typ) (%) 0.000015
Number of channels 2 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 36 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 4.5 Vos (offset voltage at 25°C) (max) (mV) 0.15 Offset drift (typ) (µV/°C) 0.35 Input bias current (max) (pA) 175000 GBW (typ) (MHz) 45 Features Shutdown, Small Size Slew rate (typ) (V/µs) 27 Rail-to-rail Out Iq per channel (typ) (mA) 3.6 Vn at 1 kHz (typ) (nV√Hz) 1.1 CMRR (typ) (dB) 120 Rating Catalog Operating temperature range (°C) -40 to 125 Iout (typ) (A) 0.03 Architecture Bipolar Input common mode headroom (to negative supply) (typ) (V) 1.8 Input common mode headroom (to positive supply) (typ) (V) -1.4 Output swing headroom (to negative supply) (typ) (V) 0.2 Output swing headroom (to positive supply) (typ) (V) -0.2 THD + N at 1 kHz (typ) (%) 0.000015
HSOIC (DDA) 8 29.4 mm² (4.9 mm × 6 mm) WSON (DRG) 8 9 mm² (3 mm × 3 mm)
  • Low voltage noise: 1.1 nV/√Hz at 1 kHz
  • Input voltage noise: 80 nVPP (0.1 to 10 Hz)
  • THD + N: –136 dB (G = 1, ƒ = 1 kHz)
  • Offset voltage: 125 µV (maximum)
  • Offset voltage drift: 0.35 µV/°C (typical)
  • Low supply current: 3.6 mA/Ch (typical)
  • Unity-gain stable
  • Gain bandwidth product:
    • 80 MHz (G = 100)
    • 45 MHz (G = 1)
  • Slew rate: 27 V/µs
  • 16-Bit settling: 700 ns
  • Wide supply range:
    • ±2.25 to ±18 V, 4.5 V to 36 V
  • Rail-to-rail output
  • Output current: 30 mA
  • SON-8 (3 mm × 3 mm), VSSOP-8, and SOIC-8
  • Low voltage noise: 1.1 nV/√Hz at 1 kHz
  • Input voltage noise: 80 nVPP (0.1 to 10 Hz)
  • THD + N: –136 dB (G = 1, ƒ = 1 kHz)
  • Offset voltage: 125 µV (maximum)
  • Offset voltage drift: 0.35 µV/°C (typical)
  • Low supply current: 3.6 mA/Ch (typical)
  • Unity-gain stable
  • Gain bandwidth product:
    • 80 MHz (G = 100)
    • 45 MHz (G = 1)
  • Slew rate: 27 V/µs
  • 16-Bit settling: 700 ns
  • Wide supply range:
    • ±2.25 to ±18 V, 4.5 V to 36 V
  • Rail-to-rail output
  • Output current: 30 mA
  • SON-8 (3 mm × 3 mm), VSSOP-8, and SOIC-8

The OPAx211 series of precision operational amplifiers achieves very low 1.1-nV/√Hz noise density with a supply current of only 3.6 mA. This series also offers rail-to-rail output swing, which maximizes dynamic range.

The extremely low voltage and low current noise, high-speed, and wide output swing of the OPAx211 series make these devices an excellent choice as a loop filter amplifier in PLL applications.

In precision data acquisition applications, the OPAx211 series of operational amplifiers provides 700-ns settling time to 16-bit accuracy throughout 10-V output swings. This ac performance, combined with only 125 µV of offset and 0.35 µV/°C of drift over temperature, makes the OPAx211 series a great choice for driving high-precision 16-bit analog-to-digital converters (ADCs) or buffering the output of high-resolution digital-to-analog converters (DACs).

The OPAx211 series is specified over a wide dual-power supply range of ±2.25 to ±18 V, or for single-supply operation from 4.5 to 36 V.

The OPA211 is available in the small SON-8 (3 mm × 3 mm), VSSOP-8, and SOIC-8 packages. The dual version OPA2211 is available in a SON-8 (3 mm × 3 mm) or an SO-8 PowerPAD™ package. This series of operational amplifiers is specified from TA = –40°C to +125°C.

The OPAx211 series of precision operational amplifiers achieves very low 1.1-nV/√Hz noise density with a supply current of only 3.6 mA. This series also offers rail-to-rail output swing, which maximizes dynamic range.

The extremely low voltage and low current noise, high-speed, and wide output swing of the OPAx211 series make these devices an excellent choice as a loop filter amplifier in PLL applications.

In precision data acquisition applications, the OPAx211 series of operational amplifiers provides 700-ns settling time to 16-bit accuracy throughout 10-V output swings. This ac performance, combined with only 125 µV of offset and 0.35 µV/°C of drift over temperature, makes the OPAx211 series a great choice for driving high-precision 16-bit analog-to-digital converters (ADCs) or buffering the output of high-resolution digital-to-analog converters (DACs).

The OPAx211 series is specified over a wide dual-power supply range of ±2.25 to ±18 V, or for single-supply operation from 4.5 to 36 V.

The OPA211 is available in the small SON-8 (3 mm × 3 mm), VSSOP-8, and SOIC-8 packages. The dual version OPA2211 is available in a SON-8 (3 mm × 3 mm) or an SO-8 PowerPAD™ package. This series of operational amplifiers is specified from TA = –40°C to +125°C.

下载 观看带字幕的视频 视频

技术文档

未找到结果。请清除搜索并重试。
查看全部 4
顶层文档 类型 标题 格式选项 下载最新的英语版本 日期
* 数据表 OPAx211 1.1-nv/√Hz Noise, Low Power, Precision Operational Amplifiers 数据表 (Rev. L) PDF | HTML 2020-1-30
应用手册 如何测量运算放大器的总谐波失真和 THD + N 的基本原理 PDF | HTML 英语版 PDF | HTML 2023-11-10
电子书 The Signal e-book: 有关运算放大器设计主题的博客文章汇编 PDF | HTML 英语版 PDF | HTML 2018-1-31
应用手册 OPA211, OPA211A, OP2211, OPA2211A EMI Immunity Performance 2012-9-24

设计与开发

如需其他信息或资源,请点击以下任一标题进入详情页面查看(如有)。

仿真模型

PSpice Simulation Companion for DAC Force And Sense Reference Drive Circuit

SBOMBX7.ZIP (101 KB) - PSpice 模型
支持的产品和硬件
仿真模型

OPAx211A PSpice Model (Rev. E)

SBOC250E.ZIP (30 KB) - PSpice 模型
支持的产品和硬件
仿真模型

OPAx211A TINA-TI Reference Design (Rev. G)

SBOC247G (340 KB) - TINA-TI 参考设计
支持的产品和硬件
仿真模型

OPAx211A TINA-TI Spice Model (Rev. F)

SBOM307F.ZIP (11 KB) - TINA-TI Spice 模型
支持的产品和硬件
计算工具

ANALOG-ENGINEER-CALC — PC software analog engineer's calculator

模拟工程师计算器旨在加快模拟电路设计工程师经常运用的许多重复性计算。该基于 PC 的工具提供图形界面,其中显示各种常见计算列表,从使用反馈电阻器设置运算放大器增益到选择合适的电路设计元件,以稳定模数转换器 (ADC) 驱动器缓冲器电路。

除了可用作独立工具之外,该计算器还能很好地与模拟工程师口袋参考中所述的概念配合使用。

支持的产品和硬件
计算工具

OPAMP-NOISECALC — Noise Calculator

This folder contains three tools to help in understandning and managing noise in cicuits. The included tools are:

  • A noise generator tool - This is a Lab View 4-Run Time executable that generates Gaussian white noise, uniform white noise, 1/f noise, short noise, and 60Hz line noise. Temporal data, (...)
支持的产品和硬件
参考设计

PMP21529 — 4 开关降压/升压双向 DC/DC 转换器参考设计

此直流/直流电源转换器参考设计展示一种用于实现备用电池应用的新方法。在正常运行期间,转换器用作电池充电器,使用与锂离子电池兼容的 CC-CV 充分充电算法。当失去直流母线电源时,转换器会立即切换到备用电源,以便为系统无缝供电。当直流母线电源恢复之后,转换器会自动切换回电池充电模式。电池电压可能会高于或低于直流母线电压。根据直流母线电压和电池电压,转换器会用作同步降压转换器或同步升压转换器,在这种情况下只会在两个开关之间切换,因此减少了开关损耗,实现了更高的效率。只有当直流母线电压和电池电压彼此接近时,转换器才会用作降压/升压转换器。

支持的产品和硬件
参考设计

TIDA-00653 — 用于电池充电应用的非隔离式双向转换器参考设计

TIDA-00653 是非隔离式 48V 至 12V 双向转换器参考设计,适用于 UCD3138 数字电源控制器支持的 48V 电池应用。该设计非常灵活,能够以 ZVS 转换模式拓扑工作以优化轻负载效率,也能够以硬开关拓扑工作以实现简单的系统设计。该双向转换器具有自动换相、轻载偏移和自适应死区时间优化功能,可实现超过 96% 的复合效率增益。由于效率显著提升,因此热损耗得以降低,在汽车应用中无需使用风冷或液冷。此外,使用 UCD3138 高控制频率控制器和基于硬件的状态机,可以实现小尺寸设计,并且可以释放系统 CPU 以用于电池管理等其他功能。

支持的产品和硬件
参考设计

TIPD139 — 双电源精密全波整流器

TI 高精度精选设计为双电源精密全波整流器提供了原理、元件选择、仿真、PCB 设计和测量结果。  该设计可在宽电源电压范围(高达 ±18V)内运行,从而实现对宽范围输入信号的全波整流。该实现方案在以下条件下以有限的失真工作:对于 20Vpp 输入信号,频率高达 50kHz;对于小至 50mVpp 的信号,频率高达 1kHz。该电路可用于需要对具有正负两种极性的输入信号进行绝对值量化的应用。  OPA2211 提供出色的噪声和失真性能,使其成为精密应用的理想选择。

支持的产品和硬件
封装 引脚 CAD 符号、封装和 3D 模型
HSOIC (DDA) 8 Ultra Librarian
WSON (DRG) 8 Ultra Librarian

订购和质量

推荐产品可能包含与 TI 此产品相关的参数、评估模块或参考设计。

支持和培训

可获得 TI 工程师技术支持的 TI E2E™ 论坛

所有内容均由 TI 和社区贡献者按“原样”提供,并不构成 TI 规范。请参阅使用条款

如果您对质量、包装或订购 TI 产品有疑问,请参阅 TI 支持。​​​​​​​​​​​​​​

视频